/**
 *  Copyright (C) 2010  Thomas Volk
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.googlecode.bookmarks.web.forms;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Locale;

import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.IModel;
import org.apache.wicket.util.convert.ConversionException;
import org.apache.wicket.util.convert.IConverter;

public class UrlTextField extends TextField<URL> {

	public UrlTextField(String id, IModel<URL> model) {
		super(id, model);
	}

	@Override
	public IConverter getConverter(final Class<?> type) {
		if (URL.class.isAssignableFrom(type)) {
			return new IConverter() {
				public Object convertToObject(String value, Locale locale) {
					try {
						return new URL(value.toString());
					} catch (MalformedURLException e) {
						throw new ConversionException("'" + value
								+ "' is not a valid URL");
					}
				}

				public String convertToString(Object value, Locale locale) {
					String stringValue = value != null ? value.toString()
							: null;
					if (stringValue != null && "http:".equals(stringValue)) {
						stringValue += "//";
					}
					return stringValue;
				}
			};
		} else {
			return super.getConverter(type);
		}
	}
}
